Carbon ion pump for removal of carbon dioxide from combustion gas and other gas mixtures

a carbon dioxide and combustion gas technology, applied in electrostatic separation, electrolysis, chemical separation, etc., can solve the problems of reducing greenhouse gases in the atmosphere, complex and chemically-intensive, and the expense of stripping carbon dioxide from other combustion gases

Inactive Publication Date: 2007-07-26
LAWRENCE LIVERMORE NAT SECURITY LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0015]Accordingly, the present system and method approach to increasing the concentration of the extracted gas permits new approaches to treating flue gas and other gas mixtures of inert gas like nitrogen, with acid gases like carbon dioxide or sulfur dioxide, since the sli

Problems solved by technology

A major limitation to reducing greenhouse gases in the atmosphere is the expense of stripping carbon dioxide from other combustion gases.
Without a cost-effective means of accomplishing this, the world's hydrocarbon resources, if used, will continue to contribute carbon dioxide to the atmosphere.
Sulfur and nitrous oxide are removed ahead of this step because they bind so tightly to the solvent that they cannot be removed.
This is inefficient due to the energy unrecoverably lost doing work on a large

Method used

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  • Carbon ion pump for removal of carbon dioxide from combustion gas and other gas mixtures
  • Carbon ion pump for removal of carbon dioxide from combustion gas and other gas mixtures
  • Carbon ion pump for removal of carbon dioxide from combustion gas and other gas mixtures

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Embodiment Construction

[0025]Referring now to the drawings, specific embodiments of the invention are shown. The detailed description of the specific embodiments, together with the general description of the invention, serves to explain the principles of the invention.

[0026]Unless otherwise indicated, all numbers expressing quantities of ingredients, constituents, reaction conditions and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about”. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the subject matter presented herein. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying o...

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Abstract

A novel method and system of separating carbon dioxide from flue gas is introduced. Instead of relying on large temperature or pressure changes to remove carbon dioxide from a solvent used to absorb it from flue gas, the ion pump method, as disclosed herein, dramatically increases the concentration of dissolved carbonate ion in solution. This increases the overlying vapor pressure of carbon dioxide gas, permitting carbon dioxide to be removed from the downstream side of the ion pump as a pure gas. The ion pumping may be obtained from reverse osmosis, electrodialysis, thermal desalination methods, or an ion pump system having an oscillating flow in synchronization with an induced electric field.

Description

RELATED APPLICATION[0001]This application claims the benefits of U.S. Provisional Application No. 60 / 761,564, filed Jan. 23, 2006, and entitled, “CARBON ION PUMP FOR REMOVAL OF CARBON DIOXIDE FROM COMBUSTION GAS AND OTHER GAS MIXTURES,” which is incorporated herein by reference in its entirety.[0002]The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.BACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]The present invention relates to a separation method and apparatus / system for cleaning of combustion gas followed by the capture and sequestering of carbon dioxide, and more particularly, the present invention relates to a water based separation method and apparatus / system for capturing and sequestering carbon dioxide from combustion gas and other mixtures.[0005]2. Description of Related Art[...

Claims

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Application Information

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IPC IPC(8): B01D53/14C01B32/50
CPCB01D53/1418B01D53/1475B01D53/18B01D53/62B01D53/965Y02C10/06C02F1/04C02F1/441C02F1/4693C02F2103/18Y02C10/04B01D2257/504B01D53/1425Y02A20/124Y02A20/131Y02C20/40
Inventor AINES, ROGER D.BOURCIER, WILLIAM L.
Owner LAWRENCE LIVERMORE NAT SECURITY LLC
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